CN104308293A - Angled Internal Thread Abrasives - Google Patents

Angled Internal Thread Abrasives Download PDF

Info

Publication number
CN104308293A
CN104308293A CN201410449590.6A CN201410449590A CN104308293A CN 104308293 A CN104308293 A CN 104308293A CN 201410449590 A CN201410449590 A CN 201410449590A CN 104308293 A CN104308293 A CN 104308293A
Authority
CN
China
Prior art keywords
grinding
shaft
grinding wheel
main shaft
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410449590.6A
Other languages
Chinese (zh)
Inventor
张广明
王向东
刘建佐
刘丹
宋世明
刘心瑞
那艳会
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DALIAN GOLDEN CNC GROUP CORP
Original Assignee
DALIAN GOLDEN CNC GROUP CORP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DALIAN GOLDEN CNC GROUP CORP filed Critical DALIAN GOLDEN CNC GROUP CORP
Priority to CN201410449590.6A priority Critical patent/CN104308293A/en
Publication of CN104308293A publication Critical patent/CN104308293A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/36—Thread cutting; Automatic machines specially designed therefor by grinding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G2210/00—Details of threads produced
    • B23G2210/04—Internal threads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

The invention discloses an internal thread grinding tool with an angle, which comprises a grinding shaft sleeve, wherein a main shaft is arranged in the grinding shaft sleeve through a bearing, a direction-changing piece is fixedly connected at the front end of the grinding shaft sleeve, an included angle beta is formed between the axis of the direction-changing piece and the axis of the main shaft, a grinding wheel shaft is arranged in the direction-changing piece through a bearing, a grinding wheel frame is fixedly connected on the grinding wheel shaft, and a flexible shaft is connected between the grinding wheel shaft and the front end head of the main shaft. The grinding tool has the advantages of high grinding precision, no need of angle adjustment, avoidance of interference phenomenon during machining, time and labor saving, reduction of machining cost, and improvement of machining quality and production efficiency.

Description

Be with angled internal thread grinding tool
Technical field
The present invention relates to a kind of grinding tool, particularly the angled internal thread grinding tool of a kind of band, utilize this grinding tool can screw thread raceway easily inside grinding ball-screw nut and other part inside threads.
Background technology
Ball screw assembly, is a kind of typical helicitic texture parts, based on the typical structure feature of the raceway profile of tooth of rolling ball screw pair screw nut, is processed as example below with the internal thread raceway of nut, carries out analysis set forth current internal thread grinding.
First, the screw thread raceway processing of nut adopts general internal thread grinding machine to carry out form grinding usually, ball screw assembly, compares the critical mechanical parts highlighted as professional technique feature, traditional forming processing technology can not meet the demand of specialized factory to nut quality and working (machining) efficiency.
The raceway normal section of nut is all now specific slot form substantially, and in order to ensure design parameter and profile accuracy thereof, the grinding of nut thread raceway generally all adopts form grinding.Traditional grinding basic skills is: on screw grinder, selected specification emery wheel is arranged on mill bar axle, mill bar axle rigidity is arranged on bistrique, the helical angle that adjustment bistrique angle is wanted to design, equally dresser is also adjusted to identical helical angle, dresser trimming wheel is to overall size parameter.In this process, the error that difference and lathe itself due to the skilled Cheng Du of operator exist, the angle of bistrique adjustment and the helical angle of designing requirement certainly exist difference, thus affect the profile accuracy of nut.
Secondly, comparatively large as special ball screw assembly,-super large helical pitch, great lead ball lead screw pair helical angle, with traditional grinding process, the range of work is limited to.When helical angle increases to a certain degree, mill bar and nut bore will be interfered mutually, can not reach the grinding profile accuracy of designing requirement.Present stage, under the condition that can not adopt numerical control trimmer, usual employing interferes filing to carry out grinding steep-lead thread, its general principle is that pole wheel is adjusted to certain angle, and the dresser of trimming wheel is not parallel with emery wheel, but have a certain degree with it, the mode of being interfered by emery wheel and trimmer examination is repeatedly ground, look for the roughly contact point of nut rolling way and steel ball within the specific limits, grinding is carried out to nut, the normal section profile of tooth of this grinding and design tooth profile depart from very large, operator need possess certain actual processing experience, the time that the nut of a usual grinding large helix angle screw thread needs is very long.Adopt and interfere filing to cause the scarce limit of the characteristic such as carrying, rigidity, motion of lead screw pair all by unpredictable.
Again, along with the increase of ball screw assembly, load and the increase of helical pitch certainly will bring the increase of nut length, traditional grinding scope can not adapt to these and change the requirement brought.
Summary of the invention
The object of this invention is to provide a kind of grinding accuracy high, without the need to adjusting angle, avoid adding the angled internal thread grinding tool of band occurring interference, time saving and energy saving, cut down finished cost, improve crudy and production efficiency man-hour, overcome the deficiencies in the prior art.
The angled internal thread grinding tool of band of the present invention, comprise mill axle sleeve, in mill axle sleeve, by bearing, main shaft is installed, direction-changing piece is fixedly connected with in the front end of mill axle sleeve, the normal of the axial line of direction-changing piece and the axial line of main shaft has angle β, in direction-changing piece, by bearing, grinding wheel spindle is installed, grinding wheel spindle is fixedly connected with grinding carriage, between grinding wheel spindle and the front end of main shaft, be connected with flexible axle.
Described direction-changing piece is contact of incline plane with mill axle sleeve front end face touching position, the normal angulation of the axial line of this inclined-plane and main shaft equals described angle β, protrusion platform is had in the beveled end of direction-changing piece, protrude the front end endoporus that platform inserts mill axle sleeve, be connected by set bolt between direction-changing piece with mill axle sleeve.
The nose threads of described grinding wheel spindle is connected with the clamp nut compressing grinding carriage and the back of the body cap compressing the emery wheel that grinding carriage is set with, the rear end of grinding wheel spindle is connected with the front end of described flexible axle by the first jackscrew, and the rear end of flexible axle is connected with the front end of described main shaft by the second jackscrew.
Described grinding wheel spindle is supported in described direction-changing piece by fore bearing, the front end, outer ring of fore bearing leans on the inner convex platform of direction-changing piece front end, the rear end, outer ring of fore bearing has compacting ring to lean, screw thread compressing member is threaded with direction-changing piece and leans on compacting ring, the inner ring front end of fore bearing has grinding carriage to lean, and the inner ring rear end of fore bearing leans in the outer lug boss of grinding wheel spindle rear end.
The angled internal thread grinding tool of band of the present invention, grinding carriage center line and the main shaft of installing emery wheel are angled, and connected by flexible axle, determine the size of above-mentioned angle in grinding ball screw assembly, during the screw thread raceway of nut according to the size of spiral angle, namely determine the angle on direction-changing piece inclined-plane.In the present invention on the no longer same straight line of the axis of two stiff shafts, form stiff shaft at an angle to each other, have special angle β, β is helical angle.Grinding tool makes angled two parts stiff shaft carry out Movement transmit by flexible shaft.Apply this grinding tool grinding large helix angle nut rolling way, do not need to adjust grinding wheel spindle.The equipped internal thread grinding machine with the grinding tool of specific helical angle does not need to adjust helical angle in grinding large helix angle raceway process, ensure the profile accuracy of internal thread grinding, improve the working (machining) efficiency of nut rolling way grinding, avoid adding and occur interference man-hour, reduce processing cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the specific embodiment of the invention;
Fig. 2 is the cross-sectional schematic shown in Fig. 1.
Detailed description of the invention
As shown in Figure 1, 2: 1 is mill axle sleeve, in mill axle sleeve 1, by the first spring bearing 5 and the second spring bearing 19, main shaft 4 is installed, the first spacer 2 is provided with in mill axle sleeve 1, main shaft 4 is set with the second spacer 3, utilizes the first spacer 2 and the second spacer 3 to carry out interval to the first spring bearing 5 and the second spring bearing 19.
There is mill axle sleeve end plate 20 at the left end of mill axle sleeve 1, during installation, utilize mill axle sleeve end plate 20 to be arranged on lathe by grinding tool of the present invention.Be set with axial limiting cover 23 in the left part of main shaft 4 and the mainshaft nut 21 that has been threaded, mainshaft nut 21 is provided with the 3rd radial jackscrew 22.
Direction-changing piece 8 is fixedly connected with in the front end of mill axle sleeve 1, direction-changing piece 8 is contact of incline plane with mill axle sleeve 1 front end face touching position, have in the beveled end of direction-changing piece 8 and protrude platform 7, protrude the front end endoporus that platform 7 inserts mill axle sleeve 1, be connected by set bolt 6 between direction-changing piece 8 with mill axle sleeve 1.The axial line of direction-changing piece 8 and the axial line of main shaft 4 have angle β, and the normal angulation of the axial line of above-mentioned inclined-plane and main shaft 4 equals angle β.In direction-changing piece 8, by bearing, grinding wheel spindle 15 is installed, grinding wheel spindle 15 is supported in direction-changing piece 8 by fore bearing 11, the front end, outer ring of fore bearing 11 leans on the inner convex platform of direction-changing piece 8 front end, the rear end, outer ring of fore bearing 11 has compacting ring 10 to lean, screw thread compressing member 9 is threaded with direction-changing piece 8 and leans on compacting ring 10, the inner ring front end of fore bearing 11 has grinding carriage 12 to lean, and the inner ring rear end of fore bearing 11 leans in the outer lug boss of grinding wheel spindle 15 rear end.Grinding wheel spindle 15 is fixedly connected with grinding carriage 12, the nose threads of wheel shaft 15 is connected with the back of the body cap 14 of the clamp nut 13 compressing grinding carriage 12 and the emery wheel compressing suit on grinding carriage 12, flexible axle 17 is connected with between the front end of grinding wheel spindle 15 and main shaft 4, connected mode is that the rear end of grinding wheel spindle 15 is connected with the front end of flexible axle 17 by the first jackscrew 16, and the rear end of flexible axle 17 is connected with the front end of main shaft 4 by the second jackscrew 18.
The course of work is as follows: this device is arranged on grinding machine by mill axle sleeve end plate 20, the left end head of main shaft 4 connects with driving mechanism, the nut that clamping chuck on grinding machine is ground, the right part of mill axle sleeve 1 stretches to nut interior, abrasive grinding wheel is arranged on grinding carriage 12 and is also clamped by back of the body cap 14, main shaft 4 is by driving mechanism driven rotary, grinding wheel spindle 15 is driven to rotate by flexible axle 17, due to grinding wheel spindle 15 and 4 one-tenth, main shaft β angle, emery wheel is made to become β angle relative to nut axis, namely consistent with the helical angle of raceway in nut.The grinding attachment of this structure have grinding accuracy high, without the need to adjusting angle, avoid adding the advantage occurring interference, time saving and energy saving, cut down finished cost, improve crudy and production efficiency man-hour.
According to the various spiral angles of nut, can be equipped with various corresponding direction-changing piece, namely the bevel angle of direction-changing piece 8 and helical angle adapt.

Claims (4)

1.一种带有角度的内螺纹磨具，包括磨轴套（1），在磨轴套（1）内通过轴承安装有主轴（4），其特征在于：在磨轴套（1）的前端固定连接有变向件（8），变向件（8）的轴心线与主轴（4）的轴心线有夹角β，在变向件（8）内通过轴承安装有砂轮轴（15），砂轮轴（15）上固定连接有砂轮架（12），砂轮轴（15）与主轴（4）的前端头之间连接有软轴（17）。 1. An angled internally threaded grinding tool, including a grinding shaft sleeve (1), and a main shaft (4) is installed through a bearing in the grinding shaft sleeve (1), characterized in that: the grinding shaft sleeve (1) The front end is fixedly connected with a direction-changing piece (8), and the axis line of the direction-changing piece (8) has an angle β with the axis line of the main shaft (4). A grinding wheel shaft ( 15), the grinding wheel shaft (15) is fixedly connected with a grinding wheel frame (12), and a flexible shaft (17) is connected between the grinding wheel shaft (15) and the front end of the main shaft (4). 2.根据权利要求1所述的带有角度的内螺纹磨具，其特征在于：所述的变向件（8）与磨轴套（1）前端面相接触处为斜面接触，该斜面与主轴（4）的轴心线的法线所成角度等于所述的夹角β，在变向件（8）的斜面端有凸出台（7），凸出台（7）插入磨轴套（1）的前端内孔，变向件（8）与磨轴套（1）之间通过固定螺栓(6)连接。 2. The angled internal thread grinding tool according to claim 1, characterized in that: the contact between the direction changing member (8) and the front end surface of the grinding shaft sleeve (1) is an inclined surface, and the inclined surface is in contact with the main shaft The angle formed by the normal of the axis line of (4) is equal to the included angle β, and there is a protruding platform (7) at the slope end of the direction changing member (8), and the protruding platform (7) is inserted into the grinding shaft sleeve (1) The inner hole of the front end, the direction changer (8) and the grinding shaft sleeve (1) are connected by fixing bolts (6). 3.根据权利要求2所述的带有角度的内螺纹磨具，其持征在于：所述的砂轮轴（15）的前端螺纹连接有压紧砂轮架（12）的紧固螺母（13）和压紧砂轮架（12）上套装的砂轮的背帽（14），砂轮轴（15）的后端通过第一顶丝（16）与所述的软轴（17）的前端连接，软轴（17）的后端通过第二顶丝（18）与所述的主轴（4）的前端连接。 3. The angled internally threaded grinding tool according to claim 2, characterized in that: the front end of the grinding wheel shaft (15) is threadedly connected with a fastening nut (13) for pressing the grinding wheel frame (12) And compress the back cap (14) of the grinding wheel set on the grinding wheel frame (12), the rear end of the grinding wheel shaft (15) is connected with the front end of the flexible shaft (17) through the first top wire (16), the flexible shaft The rear end of (17) is connected with the front end of the main shaft (4) through the second jacking wire (18). 4.根据权利要求3所述的带有角度的内螺纹磨具，其持征在于：所述的砂轮轴（15）通过前轴承（11）支撑在所述的变向件（8）内，前轴承（11）的外圈前端顶靠在变向件（8）前端的内凸台上，前轴承（11）的外圈后端有压紧圈（10）顶靠，螺纹压紧件（9）与变向件（8）螺纹连接并顶靠在压紧圈（10）上，前轴承（11）的内圈前端有砂轮架（12）顶靠，前轴承(11)的内圈后端顶靠在砂轮轴（15）后端外凸台上。 4. The internally threaded grinding tool with an angle according to claim 3, characterized in that: the grinding wheel shaft (15) is supported in the direction changing member (8) through the front bearing (11), The front end of the outer ring of the front bearing (11) leans against the inner boss at the front end of the direction changing piece (8), the rear end of the outer ring of the front bearing (11) is supported by a compression ring (10), and the threaded compression piece ( 9) It is threadedly connected with the direction-changing member (8) and leans against the compression ring (10). The front end of the inner ring of the front bearing (11) is supported by the grinding wheel holder (12), and the inner ring of the front bearing (11) The end leans against on the outer boss of the grinding wheel axle (15) rear end.
CN201410449590.6A 2014-09-05 2014-09-05 Angled Internal Thread Abrasives Pending CN104308293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410449590.6A CN104308293A (en) 2014-09-05 2014-09-05 Angled Internal Thread Abrasives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410449590.6A CN104308293A (en) 2014-09-05 2014-09-05 Angled Internal Thread Abrasives

Publications (1)

Publication Number Publication Date
CN104308293A true CN104308293A (en) 2015-01-28

Family

ID=52363679

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410449590.6A Pending CN104308293A (en) 2014-09-05 2014-09-05 Angled Internal Thread Abrasives

Country Status (1)

Country Link
CN (1) CN104308293A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106625163A (en) * 2017-02-28 2017-05-10 梅木精密工业(珠海)有限公司 Contact-type automatic alignment device and method for numerical control internal thread machine tool
CN114769748A (en) * 2022-05-19 2022-07-22 广州市敏嘉制造技术有限公司 Grinding rod mechanism for grinding internal thread
CN120362611A (en) * 2025-05-29 2025-07-25 浙江麦格智芯科技有限公司 A grinding rod structure for internal thread grinding with large aspect ratio

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2119521U (en) * 1992-04-27 1992-10-21 李维荣 Deep-water pump driven by flexible shaft
CN202239994U (en) * 2011-05-31 2012-05-30 自贡硬质合金有限责任公司 Thread machining device
JP2013129029A (en) * 2011-12-22 2013-07-04 Ntn Corp Grinding spindle unit
CN203371045U (en) * 2013-07-29 2014-01-01 宁波夏厦齿轮有限公司 Thread grinder workpiece rotating mechanism
CN203471087U (en) * 2013-10-09 2014-03-12 山东博特精工股份有限公司 Grinding device for ball screw nut

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2119521U (en) * 1992-04-27 1992-10-21 李维荣 Deep-water pump driven by flexible shaft
CN202239994U (en) * 2011-05-31 2012-05-30 自贡硬质合金有限责任公司 Thread machining device
JP2013129029A (en) * 2011-12-22 2013-07-04 Ntn Corp Grinding spindle unit
CN203371045U (en) * 2013-07-29 2014-01-01 宁波夏厦齿轮有限公司 Thread grinder workpiece rotating mechanism
CN203471087U (en) * 2013-10-09 2014-03-12 山东博特精工股份有限公司 Grinding device for ball screw nut

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106625163A (en) * 2017-02-28 2017-05-10 梅木精密工业(珠海)有限公司 Contact-type automatic alignment device and method for numerical control internal thread machine tool
CN106625163B (en) * 2017-02-28 2019-02-19 梅木精密工业(珠海)有限公司 Digital-controlled internal lathe contact automatic contraposition device and method
CN114769748A (en) * 2022-05-19 2022-07-22 广州市敏嘉制造技术有限公司 Grinding rod mechanism for grinding internal thread
CN114769748B (en) * 2022-05-19 2023-08-25 广州市敏嘉制造技术有限公司 Grinding rod mechanism for internal thread grinding
CN120362611A (en) * 2025-05-29 2025-07-25 浙江麦格智芯科技有限公司 A grinding rod structure for internal thread grinding with large aspect ratio
CN120362611B (en) * 2025-05-29 2025-11-28 浙江麦格智芯科技有限公司 A grinding rod structure for grinding internal threads with a large length-to-diameter ratio

Similar Documents

Publication Publication Date Title
CN103170888A (en) Flexible shaft grinding head system of large-lead ball nut grinding and grinding method for machining nut
CN103447566A (en) Positioner
CN102601713A (en) Double-station CNC (computer numerical control) vertical ball cage arc raceway groove and ball hole grinding machine
CN102303247A (en) System for centering slender workpiece of machining cutting machine tool
CN104308293A (en) Angled Internal Thread Abrasives
CN104209838A (en) Groove grinding machine for automatically correcting screw tap
CN206029572U (en) Oil pump gear axle spiral -flow type barreling polishing processing tool equipment
CN103084979A (en) Grinding wheel outer diameter orthodrome grinding roller base surface machine tool
CN108907918B (en) Cylindrical grinding machine
CN105364710A (en) Grinding and clamping device for large hollow shaft part
CN212946864U (en) Gun drill grinding machine
CN103752954A (en) Machining method of worm gear with straight profile helical surface
CN104625961A (en) Main feed screw device for grinding machine
CN208728843U (en) Internal spline taper can rise mandrel
CN207155563U (en) Special-shaped wheel face trimming device
CN201922318U (en) Inner circle and outer circle composite grinder
CN106736899A (en) A kind of polishing grinding lathe
CN203449055U (en) Expansion type axial positioner
CN211639264U (en) Grinding device for inner hole of charging barrel
CN204893606U (en) Processingequipment in shaping hole
CN204584922U (en) A kind of lathe grinding processing unit (plant) of carbide alloy body cylindrical circular arc king bolt groove
CN102275117A (en) Oilstone clamp for super finishing of bearing groove
CN204123230U (en) Auto modification screw tap notch grinder
CN106799671A (en) The lathe that a kind of multistation is polished simultaneously
CN207564321U (en) Numeral-controlled internal grinder thin-walled parts clamping mould

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150128